CVE-2006-3683 in Flipper Poll
Summary
by MITRE
PHP remote file inclusion vulnerability in poll.php in Flipper Poll 1.1 and earlier allows remote attackers to execute arbitrary PHP code via a URL in the root_path parameter.
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Analysis
by VulDB Data Team • 10/25/2025
The vulnerability described in CVE-2006-3683 represents a critical remote file inclusion flaw affecting Flipper Poll version 1.1 and earlier. This issue resides within the poll.php script where the application fails to properly validate or sanitize user-supplied input passed through the root_path parameter. The vulnerability classifies as a remote code execution threat that enables attackers to inject and execute arbitrary PHP code on the target system. The flaw occurs when the application directly incorporates user-provided URLs into file inclusion operations without adequate input validation or sanitization measures. This vulnerability demonstrates a classic path traversal and code injection pattern that has been prevalent in web applications for decades. The issue directly maps to CWE-98, which describes improper file inclusion vulnerabilities where applications include files based on user-supplied input without proper validation. From an operational perspective, this vulnerability presents a severe risk as it allows remote attackers to execute malicious code on the server, potentially leading to full system compromise, data exfiltration, or unauthorized access to sensitive information. Attackers can exploit this by crafting malicious URLs in the root_path parameter that point to remote malicious PHP scripts, enabling them to execute arbitrary commands on the target server.
The technical exploitation of this vulnerability follows a specific pattern where an attacker manipulates the root_path parameter to include external URLs that contain malicious PHP code. When the poll.php script processes this parameter, it performs a file inclusion operation that loads and executes the remote code, effectively giving the attacker complete control over the server's execution environment. The vulnerability stems from the application's lack of proper input sanitization and validation, allowing attackers to bypass normal security boundaries and inject malicious code directly into the server's runtime environment. This flaw particularly affects web applications that dynamically include files based on user input without proper security controls. The operational impact extends beyond simple code execution to encompass potential data breaches, system compromise, and unauthorized access to sensitive resources. From a threat modeling perspective, this vulnerability aligns with ATT&CK technique T1190, which describes the use of remote services for code execution, and T1059, which covers the execution of commands through various scripting languages. The vulnerability also relates to broader categories of web application security issues including improper input validation and insecure file handling practices.
Mitigation strategies for this vulnerability require immediate patching of the Flipper Poll application to version 1.1 or later where the issue has been resolved. System administrators should implement proper input validation and sanitization measures to prevent user-supplied data from being used in file inclusion operations. The recommended approach includes implementing strict parameter validation, using allowlists for acceptable file paths, and avoiding dynamic file inclusion based on user input. Organizations should also deploy web application firewalls and input validation rules to block suspicious URL patterns and prevent exploitation attempts. Additionally, the principle of least privilege should be applied by restricting file inclusion operations to only necessary paths and ensuring that the web server runs with minimal required permissions. Security monitoring should be enhanced to detect unusual file inclusion patterns and potential exploitation attempts. The vulnerability highlights the importance of secure coding practices and input validation in preventing remote code execution attacks. Regular security assessments and code reviews should be conducted to identify similar vulnerabilities in other applications. Network segmentation and proper access controls should be implemented to limit the potential impact of successful exploitation attempts. Organizations should also maintain up-to-date vulnerability management processes and ensure timely application of security patches to prevent exploitation of known vulnerabilities.